How to Reheat Roast Potatoes

Written By Ross Young


Who doesn’t love crispy on the outside, soft on the inside roast potatoes? They’re a popular British staple and the perfect accompaniment to chicken, lamb, or beef dinners.

If you’ve managed to resist eating all of your roasties in one go, you might have popped them in the fridge or freezer to save them for another day. So, can you reheat roast potatoes?

To reheat roast potatoes, the best method is to pop them onto a preheated tray with a drop of oil in the oven. You can use the microwave but they will become soggy, unfortunately.

How to Reheat Roast Potatoes

Undoubtedly the best way to reheat roast potatoes is in the oven. This ensures your potatoes remain nice and crispy and don’t go soggy. But it’s also possible to reheat them in the microwave and air fryer if you prefer.

Let’s begin with reheating roast potatoes in the oven: 

How to Reheat Roast Potatoes in the Oven

If you can, you should always reheat roast potatoes in the oven, and you can do so by following these simple steps: 

  1. Preheat Oven
    Begin by switching your oven on to 400F or 205C. 
  2. Prepare Roast Potatoes
    Line a tray with baking parchment or tin foil and spray it with low-fat cooking oil or olive oil. This will prevent your potatoes from sticking to the surface. Then, spread your potatoes out evenly on the tray.
  3. Cover With Foil
    Affix a layer of tin foil to the tray, so your potatoes are covered. This ensures they will heat equally and won’t burn. 
  4. Reheat
    Place your tray of roasties in the oven for 10-15 minutes. 
  5. Check, Enjoy, and Serve
    After no more than fifteen minutes, remove your potatoes and check that they’re hot all the way through. If they are, they’re ready to serve and enjoy!
Roast Potatoes in the Oven

How to Reheat Roast Potatoes in the Microwave

You can technically reheat almost anything in the microwave, and the same is true for roast potatoes.

That said, it’s not the best option, as they’re likely to go mushy or soggy. However, if you still want to reheat them in the microwave, here’s how to go about it: 

  1. Prepare Potatoes
    Place your roast potatoes on a microwave-safe plate or dish, ensuring they’re well-spaced out. 
  2. Cover
    If you have some available, wrap your roast potatoes tightly in microwave-safe plastic wrap. This does a much better job than paper towels, but you can use paper towels if you have no other option.
  3. Reheat
    On your microwave’s lowest setting, reheat your roast potatoes in sixty-second bursts, checking them each time for doneness. 
  4. Serve and Enjoy
    Once your potatoes are nice and hot, remove them from the microwave and add seasoning before serving them up.

How to Reheat Roast Potatoes in an Air Fryer

If you have an air fryer in your kitchen, you can use it to reheat roast potatoes by following these steps: 

  1. Add Potatoes to the Rack
    Place your roast potatoes on your air fryer’s rack. You don’t need to worry too much about how they’re positioned, and it’s fine for them to overlap. 
  2. Switch the Fryer On
    Set your air fryer to a temperature of around 400F or 205C. 
  3. Reheat
    Leave your roast potatoes in the fryer for up to five minutes before checking them for doneness. You might then need to heat them for a further two minutes if they’re not quite to your liking. 
  4. Serve and Enjoy
    If they’re hot and crispy, your roast potatoes are ready to serve and devour with your meal and should be just as good as they were when they were freshly cooked. 
Potatoes in an Air Fryer

How to Reheat Roast Potatoes Successfully

Reheating roast potatoes isn’t too difficult, but a few tips will help you have complete success. Give these 3 vital tips a quick read:

  • Use the Oven for Best Results – The best way to reheat roast potatoes is in the oven. Although it takes longer than the other methods introduced above, it yields the best-tasting potatoes and is worth the extra time!

    Reheating roast potatoes in the microwave can cause them to go soggy, which we’re sure you want to avoid. 
  • Reheat From Frozen – If you have frozen your roast potatoes to preserve them for a little bit longer, you should reheat them in the oven directly from frozen.

    If you defrost them first, they’re more likely to go mushy. You will need to add 5-10 minutes to the reheating time if you’re reheating roast potatoes from frozen.
  • Freeze Them – Roast potatoes are far too delicious to throw away! The good news is that they can be kept in the fridge for 3-4 days and then frozen for up to 6 months.

    This mean you can reheat and enjoy them whenever you like within this timeframe without worrying about them going to waste. 

Is It Safe to Reheat Roast Potatoes?

It’s perfectly safe to reheat roast potatoes, whether refrigerated or frozen. We recommend reheating roast potatoes in the oven for the best results, as microwaving them can cause them to go mushy, particularly if you have defrosted them.

An air fryer is also a good option if you have one, as it reduces the cooking time slightly.

Overall, it would be best if you never had to throw roast potatoes away, as they can be frozen and reheated for up to six months from the time they were cooked initially. 

Reheating Roast Potatoes FAQs

Below are a few common questions to bear in mind when it comes to reheating roast potatoes:

Can You Eat Roast Potatoes Cold?

Of course! There’s nothing quite as satisfying as a cold roast potato later in the evening after enjoying a Sunday lunch.

How Do You Keep Roast Potatoes Cripsy When Reheating Them?

The first thing to do to ensure roast potatoes remain crispy is to avoid the microwave. The microwave will cause roast potatoes to go mushy. When reheating them in the oven, preheat a baking tray with some oil. This will help to crisp up the outer layer of the potatoes.

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